| 摘要 |
PURPOSE:To mount a micro-laser detector at an arbitrary position not affected by the temperature rise of an integrating sphere, to prevent the reception of noises and to control outputs from laser lights precisely by combining an output section for the integrating sphere and the light-receiving section of the micro- laser detector by an optical fiber. CONSTITUTION:When detecting laser lights 8 outputted from a total reflection mirror 5 are projected to an integrating sphere 9, detecting laser lights 8 are diffused and lowered uniformly in the integrating sphere 9, and the lowered laser lights are projected to the light-receiving surface of a micro-laser detector 12 through an optical fiber 16. Since laser lights passing through the optical fiber 16 do not pick up noises from the outside and the micro-laser detector 12 is fitted to a printed substrate 18 to which a comparator 14, etc. are set up, the SN ratio of signals inputted to the comparator 14 from the micro-laser detector 12 is improved. Since the micro-laser detector 12 is mounted at a location separate from the integrating sphere 9 through the optical fiber 16, the micro-laser detector 12 is not affected by the temperature rise of the integrating sphere. |
